Kyler Murray is gonna be running for his life a lot this season. If they do plan on running an air raid offense, that's gonna leave Murray alone in the shotgun. NFL blitzes play havoc on good offensive lines, but Arizona has a terrible offensive line. And, as Murray saw the other night, NFL linebackers are very fast.
It will be an adjustment for both quarterback and coach. I will say this...he can and does get rid of the ball fast--that does help a lot. My all-time favorite quarterback, Dan Marino, got rid of the ball very fast. But, even so, he got hit a lot using multiple receivers. Marino is a big guy; Murray is 5'10" and around 205 pounds. He will get hit hard this year. Defenses know how small he is.
Arizona has been a crappy team for a long time--since Kurt Warner retired. I just don't think they will be making that much noise this year or in the foreseeable future. The Rams and Seahawks are the class the division. The Niners are still rebuilding. It could get ugly this year for the Cardinals.
You can't compare Murray and the results Baker Mayfield got in Cleveland. Mayfield went to a competitive team with a good defense. Their defense is going to be even better this year, and they've got two very good running backs and two good receivers. Murray just doesn't have the weapons around him right now.